Furnace.



G. W GPE.

PURNAGB.v APPLICATION FILED DEO. 23. 1907.

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Patented Nov. 3, 1908.

xNVENToR MyW/6W A ffarneys.

.s wie 'i than' u. t wat. #mail no. acari@ Be it known that citizen ol' the United Sta troit, county of lNayne, have invented a certain n rovement in Furnaces, a

-full, clear, tion of the same, such owing to be a siiilled in the art to make and use the same, rei to the accompanying drawings', w

flpeeication of Letters Application filed Decornbr 23, N07.

i i nien ASSlC/TNOR ASHLEY GND, JR., OF DETROlT, MlCliGihl W. Corn, a i

which it perta'ms to part oi this specification.

My invention relates to furnaces, and consists in the improvements scribed.

ln the accompanying a section in a vertical bodying my invention.

B, a w

A, is the grate. combustion chamber.

C, is a wall surrounding Yforming a water space walls.

1 D, is a wall surroun magazine through whic grate A.

iorining a water space walls.

plane erence being had hich form a hereinafter dedrawing the ligure is oi' a furnace emall inclosing the the wall B, and

or jacket between said ding and lorming the h the coal is fed to the he wall D, and

E, is a wall surrounding t or Jacket between said jackets above described.

through the wall lil. R, is a casing the magazine between the walls are tubes connecting the two water which the products ted away.

through the wall C, between, and

located at the lower end of E and l),

and open at the lower end of said magazine;

i", are apertures formed t and communicating with casing` lt, at tho upper Q, is a partition extending aro hrough the wall D, the interior oi the portion thereof.

und the wall y l), and dividing the casing R, into an upper and lower tion chamber.

M., dividing upon the outer end of compartment, which communicates with magazine through the lower one oi which opens the .valve ll the upper one oi the interior of the apertures r, and the at S, to the conclusl?, to the partition oss the conduit hich a latch engages' to t said valve to different positions. N hen the valve N, is at its hivhest position, l as shown in the figure in 'full ines, the pas sage to 'the upper compartment oi the casing i l, through the"conduit M, is closed and said i conduit is opened to the lower compartment 1 oi said casing so that air flows through said i conduit and ont at il, into the combustion chamber to promote the combustion oi' gases at this point. lvl/Then the valve N, is turned to its lower position, as indicated by dotted 1 lines, the conduit M, is opened only to the l upper part oi'Y the casing adi ust y it, air islpermitted to enter and pass through the aperture r, l in the wall D, At intermediate positions of l the valve N, the conduit will be opened more l or less to both oi said compartments. When the air passes iii-to the combustion vchamber at S, it is supplied to theiiio at the surface of l the fuel and acts to promote combustion l there; when the air passes through the openi ingsfr, it passes through the fuel carrying with it the generated gases and 4acting to l cause the 'lire to penetrate deeper into the fuel.

lNhat l claim is'. f

l. ln a Jiurnace having a wall surrounding the combustion chamber, and a magazine, a i casing surrounding said magazine, a con uit i leading to the outer air and communicating with said casing, said casing being divided i into an upper and lower compartment, the l lower compartment opening at l of said magazine, the upper compartment l opening into' said'magazine above its lower l end and a valve in said conduit adapted to i place one or the other ol said compartments into coinmunication with the outer air. t2. ln a lurnace, the combinationAot1 a wall i surrounding the combustion chamber prol vided with a water iacliet, a in agazine pro vided with a water jacket, a casing in sai last named '-.vater jacket having a compartment open at the lower end of the magazine, and a compartment opening into said magazine above its low end, a conduit passing through the i Lred water jacket and lcoinmunicating with said casing, and a valve adapted to put conduit into communication with one or the other of said compartments.

3. ln furnace the combustion c nher, a magazine, a casing surrounding' said magazine, a partition the lower end ing at the lower end of said magazine, the updividing said cesin into an upper and lowei end of -said conduit for 4the compartment, the oWer compartment open- 4scribed.

per compartment opening into said maga- Zine above its lower end, a conduit leading to the outer air communicating with said oas I ing, a Valve in said conduit pivotedto seid partition and extending toward the outer vWitnesses:

CHARLES F. BURTON; WILLIAM M. SWAN.

purpose deH In testimony whereof, l sign this specification in the presence of two witnesses.

GEORGE W, (TOPE. 

